package com.cy.pj.sys.service.impl;

import com.cy.pj.common.exception.ServiceException;
import com.cy.pj.sys.dao.SysRoleDao;
import com.cy.pj.sys.dao.SysRoleMenuDao;
import com.cy.pj.sys.pojo.CheckBox;
import com.cy.pj.sys.pojo.PageObject;
import com.cy.pj.sys.pojo.SysRole;
import com.cy.pj.sys.pojo.SysRoleMenuVo;
import com.cy.pj.sys.service.SysRoleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.List;
@Service
public class SysRoleServiceImpl implements SysRoleService {
    @Autowired
    private SysRoleDao sysRoleDao;
    @Autowired
    private SysRoleMenuDao sysRoleMenuDao;
    @Override
    public PageObject<SysRole> findPageObjects(String name, Integer pageCurrent) {
        if(pageCurrent==null||pageCurrent<1)
            throw new IllegalArgumentException("当前页码值无效");
        //2.查询总记录数并进行校验
        int rowCount=sysRoleDao.getRowCount(name);
        if(rowCount==0)
            throw new ServiceException("没有找到对应记录");
        //3.查询当前页记录
        int pageSize=3;
        int startIndex=(pageCurrent-1)*pageSize;
        List<SysRole> records=
                sysRoleDao.findPageObjects(name,
                        startIndex, pageSize);
        //4.对查询结果进行封装并返回
        return new PageObject<>(pageCurrent, pageSize,
                rowCount, records);
    }

    @Override
    public int saveObject(SysRole entity, Integer[] menuIds) {
        //1.参数有效性校验
        if(entity==null)
            throw new IllegalArgumentException("保存对象不能为空");
        if(StringUtils.isEmpty(entity.getName()))
            throw new IllegalArgumentException("角色名不允许为空");
        if(menuIds==null||menuIds.length==0)
            throw new ServiceException("必须为角色分配权限");
        //2.保存角色自身信息
        int rows=sysRoleDao.insertObject(entity);
        //3.保存角色菜单关系数据
        sysRoleMenuDao.insertObjects(entity.getId(), menuIds);
        //4.返回业务结果
        return rows;
    }

    @Override
    public SysRoleMenuVo findObjectById(Integer id) {
        if(id==null||id<0)
            throw new IllegalArgumentException("id的值不合法");
        SysRoleMenuVo result = sysRoleDao.findObjectById(id);
        if (result==null)
            throw new ServiceException("此纪录已经不存在");
        return result;
    }

    @Override
    public int updateObject(SysRole entity, Integer[] menuIds) {
        //验证合法
        if (entity==null)
            throw new IllegalArgumentException("更新对象不能为空");
        if(entity==null)
            throw new IllegalArgumentException("id的值不能为空");
        if (StringUtils.isEmpty(entity.getName()))
            throw new IllegalArgumentException("角色名不能为空");
        if (menuIds==null||menuIds.length==0)
            throw new IllegalArgumentException("必须为角色指定一个权限");
        //更新数据
        int rows = sysRoleDao.updateObject(entity);
        if (rows==0)
            throw new ServiceException("对象可能已经不存在");
        sysRoleMenuDao.deleteObjectsByMenuId(entity.getId());
        sysRoleMenuDao.insertObjects(entity.getId(), menuIds);
        return rows;
    }

    @Override
    public List<CheckBox> findObjects() {
        return sysRoleDao.findObjects();
    }

}

